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Knitting faults , defects and it's reasons
[ Time:2015-12-15 14:00:33  Visits:748  Size: Large Medium Small ]



FAQ  In knitting fabric production
1. Holes

  • Mainly caused by coarse yarn
  • The yarn is too dry or poor quality
  • Improper yarn guide position
  • Yarn presenting tension or take down rolling tension too strong
  • Improper yarn loop timing.
  • Stitch is too loose and long
2. Drop stitch
  • improper yarn guide position
  • yarn tension is too weak
  • yarn stitch is too long
  • Yarn is guided and cross the improper yarn feeder eyelet
3. Unnecessary Tuck loops
  • Take down rolling strength is too weak
  • Fabric density is too big.
  • Sinker position not fully push out, which cause improper take off of the loop
  • Poor Needle latch
4. Needle latch damage
  • Improper yarn guide position and yarn guide eyelet
5. Needle Butt damage
  • Oil shortage or improper oil used
  • Yarn quality is poor or the yarn count is not suitable for the machine gauge
  • R.P.M is too high or the density of the fabric is too dense.
  • improper timing of the loops
  • damaged by poor cylinder, dial needle bed or cams.
  • the surface of the knitting elements not smooth or lack of lubricating and  cleaning.
6. Sinker damage
  • Oil shortage or improper oil used
  • sinker cam not properly lubricated or cleaned
  • the touch between yarn guide or oil nozzle with sinker
  • The gap between sinkers should be 0.25~0.3mm, improper gap distance may cause sinker damage.